I just bought a Sigma 30mm f1.4 lens from Bestbuy.com via the marketplace vendor Buy.com for $36.34. They processed the order and it is on its way to me. This is a new lens in the SA mount. At first I thought it was a mistake price but went ahead and ordered it anyway as it will go well with my 50mm f2.8 macro. I'm only keeping prime lenses from now on for the SA mount re: SD1M.